text: The Planck distribution can be used to find the spectral emissive power of a blackbody,  as follows,
  The total emissive power of a blackbody is then calculated as,The solution of the above integral yields a remarkably elegant equation for the total emissive power of a blackbody, the Stefan-Boltzmann law, which is given as,where  is the Steffan-Boltzmann constant.